Google's own developer listing named a Qualcomm SW5100 in the Pixel Watch 5 last month. It appeared in the Play Console, the dashboard Google gives Android developers, which puts Google itself among the sources now disagreeing. A specification sheet published by Dealabs names the Snapdragon W5 Gen 2 Accelerated instead, a chip Qualcomm has not announced. Leaked marketing images name the Snapdragon W5 Gen.
The 45mm model is quoted at up to 40 hours. The larger cell goes from 455mAh to 465mAh with that figure unchanged, and a 50% charge takes 15 minutes. The rest of the leaked specification is 3GB of RAM, 64GB of storage, Wear OS 7 with Gemini, and sleep tracking that logs your breathing rate. Renders of the same watch leaked on July 31. Google fills in the rest on August 12 at Made by Google.